Tinner s mandrel



(No Model.)

H. E. PLANE.

TINNBRS MANDREL.

No. 439,183. Patented Oct. 28, 1890.

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UNITED STATES PATENT OFFICE.

HARRY E. PLAINE, OF BROKEN BOW, NEBRASKA.

TINNERS MANDREL.

SPECIFICATION fOrming part f Letters Patent N0. 439,183, dated. OCtOber 28, 1890. Application filed April 4, 1890. Serial No. 346,527. (No model.)

To all whom it may concern:

Beit known that I, HARRY E. PLAINE, a citizen of the United States, residing at Broken Bow, in the count-y of Custer and State of Nebraska, have invented certain new and useful Improvements in Tinners Mandrels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has reference to an attachment for tinners mandrels, and the object contemplated is to produce a seaming attach ment which can be applied to the hollow mandrels now in common use, whereby the work of double-seaming milk-cans, tea-pots, long cylindrical vessels having one end only, or small vessels with small openings, and similar articles can be performed with much greater facility. Y

With this object in view my invention consists in the peculiar features and combinations of parts, more fully described hereinafter, and pointed out in the claims.

In the accompanying drawings, Figure 1 represents a sectional elevation of my complete device as applied to an ordinary hollow mandrel; Fig. 2, an end view of my attachment detached; Fig. 3, a front view; and Fig. 4, a modification of a detachable head-block of diiferent form.

The hollow mandrel A, to which my irnproved attachment is applied, is of the form commonly used by tinners for seaming, dsc.; but it can be successfully used upon any similar support. This attachment consists of a cast-iron body portion B, having a recess C in the top to receive the stem D of a segmental head-block E, which receives the blow of the mallet in the seaming operation. One side of the body B is provided with a sloping surface F, from which projects laterally or obliquely a head G. A laterallyprojecting arm H extends out from the body B and enters the hollow end of the mandrel A, and is rigidly secured thereto by the thumb-screw I. The lower portion of the body B is cut out to form an opening J beneath the sloping surface F and receives the upper portion of the end of the mandrel.

In Fig. 3 a modified form of the head-block is shown to illustrate that either the segmental or round head may be used, according.

to the kind of work in hand.

In using my device the operator places the vessel over the body portion of the attachment, so that the seam will lie upon or along the edge of the head-block E, and then hammers -it down with a mallet in the usual way. In.

seaming those vessels shaped like a milk-can or in riveting ears upon vessels he places the latter over the block, so that the seam will bear upon the head Gr andthe body rest upon the head-block, whereupon the mallet is used as upon the other head F. By this means it will be noticed lthat the seaming operation upon milk-cans and the forms previously mentioned can be performed with much greater facility than with the mandrels heretofore in vogue.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In combination with ahollow mandrel, a seaming attachment consisting of a body portion provided with an extension arranged to fit within said hollow mandrel, and a recess above said extension adapted to contain the end of the upper part of the latter, a suitable set-screw extending through said extension and arranged to lock the parts together, and a head-block removably tting said body portion and having a sloping face to receive the blow of the hammer, substantially as set forth.

2. The combination, in a seaming device, of a hollow mandrel or suitable supporting-arm, a body portion provided with a laterally-extending arm adapted to enter said mandrel, a thumb-screw for locking the two parts together, a body portion, substantially as described, provided with a head-block upon its upper portion, a sloping surface, and an obliquely-projecting head located upon said surface, all arranged and adapted to operate in the manner and for the purpose substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

HARRY E. PLAINE. Witnesses:

ALPHA MORGAN, E. C. HOUSE. 

